<template>
  <el-container class="home-container">
    <!-- 头部 -->
    <el-header>
      <div>
        <img src="../assets/logoHeader.jpg" alt="" />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <el-container>
      <!-- 侧栏 -->
      <el-aside :width="isCollapse?'64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <el-menu
          background-color="#333734"
          text-color="#fff"
          active-text-color="#409EFF"
          :unique-opened="true"
          :collapse='isCollapse'
          :collapse-transition="false"
          router
          :default-active="activePath"
        >               <!--一级菜单-->
          <el-submenu :index="item.id+''" v-for="item in menuList" :key="item.id"   >
              <!-- 一级菜单模板区 -->
            <template slot="title">
                <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{item.authName}}</span>
            </template>
           <!-- 二级菜单 -->
            <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
                <template slot="title">
              <i class="el-icon-menu"></i>
              <span>{{subItem.authName}}</span>
            </template>

            </el-menu-item>
          </el-submenu>
         
        </el-menu>
      </el-aside>
      <!-- 主题 -->
      <el-main>  
        <router-view></router-view>  
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
  data(){
    return{
      //左侧菜单数据
      menuList:[],
      iconsObj:{
        '125':'iconfont icon-yonghu',
        '103':'iconfont icon-tiji',
        '101':'iconfont icon-shangpin',
        '102':'iconfont icon-danju',
        '145':'iconfont icon-baobiao'
      },
      isCollapse:false,
      //被激活的链接地址
      activePath:''
    }
  },
  created() {
    this.getMenuList()
    this.activePath=window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    //获取所有菜单
    async getMenuList(){
     const {data:res}=await this.$http.get('menus')
     if(res.meta.status!==200) return this.$message.error(res.meta.msg);
     this.menuList=res.data;
     console.log(res);
    },
    //切换菜单的折叠与展开
    toggleCollapse(){
      this.isCollapse=!this.isCollapse;
    },
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath=activePath
    }

  },
};
</script>
<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    img {
      width: 60px;
      border-radius: 50%;
    }
    span {
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #333744;
  .el-menu{
    border-right:0px;
  }
}
.el-main {
  background-color: #eaedf1;
}
.iconfont{
  margin-right:10px;
}
.toggle-button{
  background-color: #4A5064;
  font-size: 10px;
  line-height: 24px;
  text-align: center;
  color: #fff;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>